729 20 | ( | 1 | − | x | ) | = | 457 50 |
方程左边 = | 729 20 | × | 1 | − | 729 20 | x |
= | 729 20 | − | 729 20 | x |
729 20 | − | 729 20 | x | = | 457 50 |
- | 729 20 | x | = | 457 50 | − | 729 20 |
- | 729 20 | x | = | - | 2731 100 |
2731 100 | = | 729 20 | x |
729 20 | x | = | 2731 100 |
x | = | 2731 100 | ÷ | 729 20 |
= | 2731 100 | × | 20 729 |
= | 2731 5 | × | 1 729 |
x | = | 2731 3645 |
x | = | 0.749246 |